X g geosge i



6.1.. HOLLENBECK. I LIGHT CONTROL FOR AUTOMOBILE LAMPS.-

A'PPLICATION FILED NOV-29.19113. 1,39%626, lul'mtvd July 15, 1919.

2 2SHEFTS--SHEET l.

a a. Whom $47M Mum G. L. HOLLENBECK.

' new CONTROL FOR AUTOMOBILE LAMPS. APPLlCATION FILED NOV. 29. ISIS.

1 ,309,626. lzm-md July 15', 191E}.

2SHEETSSHEET 2,

f I Elm-vevuoz A/g w z {M 43% (7. WM)? 17m! ximwg f; STATES" PATENT enema p '3 GEORGE L HoLLEnBEcx, or JAMESTOWN, NEW YORK.

nsoogeze. i

Specification of Letters Patent.

LIGHT CONTROL FOB. aoromomm-Lmrs.

Pgitnted Early t 5, 319.1%.

. a 5 Application filed November SN, 1918. Serial No. 264,484.

' uiz, whom it mayconcern Beitknown that I, (lnonor. In Home:- BnQijna citizen of the United States, residing atithel eit'y of Jamestown, in the county of Chautauqua and State of New York, have inyented, certain new and useful Improvements'iz Light Controls for Automobile- Lanips, ,oi' which the. following, taken in connection with the accompanying drawings,

.iisv a specification.

i'lheimention relates to lamps for vehielee and'siniilar'usesin which mechanism is proyided to project and control the light; andthe object of the improvement is to provide a l'amp having a parabolic shaped refie etor with an opaque mirror in the upper portion of the frontof said parabolic shaped reflector which faces toward the reflector to thereby control the reflected rays of light from said, upper portion reflecting them do\,vnward to: the lower portion of theparabolie reflector and thence out through the lower portion of the lamp by triple reflection thereby providing an intensified beam of light from said lower portion which may i be controlled so that it does not rise above a, prescribed distanw from, the surface of a. level-roadway at two or three hundred feet infront of said lamp and thereby protects the gvision oi'the passerby or b stand--.r from the glare of vthe rcllected light; and second,

'to mount said mirror in a metallic holder vation of a parabolicreflector lamp with y the opaque .lightficontrol in the upper portion thereof. Fig, 215a sectional new at. line 2-.2'in Fig. 1 showmga parabol c refltwtor-lamp such as is used in automobiles.

and similar vehicles with The lightcontrolling mirror mounted therein and showin in dotted line'the lines of control of said light including'the triple rcileclion of the upward, light rays. Fig. 3 is. a perspective view of the rear side of the mirror light control allowing the prcl'crrcd construction and arrangement of the same. Fig. 1- is a the rim of the reflector to sun; ort said iight 3 control mirror. Fig: 6 is a front eievation of a round mirror showing in dotted line the manner of making a pair of light roirtroi mirror reflectors from the single dish there by greatly reducing the cost of the Eight control mlrror and simplifying its manoiaetore,

Like characters of reference refer to (201'- responding parts in the severa. views.

The numeral 10 desigzmtes the lamp or lamp casing, and the numeral 11 the parabolic reflector for said lamp and which fits within the casing 10, being separated from said casing by means of a ring 12 near the rear portion of the lamp and an outwardly projecting flange 13 around the front rim of the reflector 11 which prcfrrabiy has a rear wardly turned flanged outcr cdg'te to receive the assembling screws 14 througrii't-he rim of the casing 10 and said rearward flange on the reflector 11.;

A grooi'c l5 iQproridcd in the flanged rim 13 to receive therein the packing in which rests against the front glaxs cover i? around the scmi-circuhir lower portion and against the rim lb of the metallic holdcr 19 around the semi-circular upper portion oi said. lamp. A .-;upportin; rim or ring .21 attached by tho asecmbling nt'l'iil'b 14 around the casing l0 and reflector 11 lo hold all the parts lirmly in position by extending down over the outer cdgc of the giass cover 17.

The mirror holder 13! is preferably made, of sheet metal in semi-circular form and should be about the size of one-half the glass covcr 17. It is provided on its lower edge with the dmrnwardlr projecting: central lug 2-. which is preferably an integral portion of tbc plate If) and preferably a segment oi EMF,

hold the same in position until inserted within the lamp, after which the pressure oi the cover 17- upon the mirror and its holder holds said mirror firmly in position within the reflector 11.

The mirror light control holder 19 is preforably installed 'within the lamp by means of two lugs out from the edge 18 of the plate 19 at spaced distances from the lug 24 to be turned inward, as shown in Figs. 3, 4 and 5, and inserted into openings 26 in the rim 13 of the reflector 11 during installation, which openings 26 are preferabl made to tit closely upon the lugs 25 and t ereby retain the holder 19 firmly in position in the lamp until the glass cover 17 and rim 21 are placed against said holder 19 therebyv firmly supporting it in the adjusted position.

The light 27 is preferably. adj'ustably mounted in a holder 28 so that it may be 'movcd in and out,"as shown in dotted line in (ill Fig. 2, to thereby adjust the light 27 to the proper ffocus for the reflector 11 and mirror 20, the lamp being shown with an electric bulh'lig'ht and feed wires 2t) extending down. therefrom to a source of electrical supply.

The parabolic reflector 11 is preferably as near the true parabolic curve as possible so as to reflect the downward rays of light in parallel alinen'ient throughout the area. B, as shown in Fig. 2, said rays being non-inter eepted and shine through the clear lower portion 30 of the lam '1 up to the mid-line or lower edge of the holder 19 and mirror 20 each. side of the lug, Said holder 19 being opaque prevents the lyeam oi" light. B rising above the desired height over a level roadway when the lamp 10 is adjusted correctly, and the vision oi? th passerby or by stander is thereby protected from the glare of the lan'ip. The upward rays of light (I are reflected four times instead of once as is the case with the downward rays of light 13, each upward ray being reflected first by the reflector 11 into the mirror reflector 20, thence hacl; into the reflector ll and thence down to the lower portion of said reflector 11 and thence reflected out in parallel alincmcnt with the rays B, thereby intensifying the beam of light, B as it shines upon the roadway.

The area iu'imediately in front of the lamp 10 is lighted by the direct rays A thereby providing for the complete illun'iination of the roadway both near the vehicle and at a distance therefrom and at the same time protecting the vision oi the. bystander or pass-- erhy.

It is apparent that my light control is absolutely opaque and shields the entire upper portion of the light 27 and reflector 11 as well as the direct rays from the central beam of'the light 27 from the vision of the passerby or bystander. It is also obvious that said light control device may be easily and quickly constructedat low cost. It is insertible in substantially all forms of reflector lamps, different sizes being provided as required; the present reflector lamp construction being used only in illumination of the simple manner of installment for my light control. The angle of the mirror 20 in relation to the reflector ll'is such that each ray of light as reflected by said mirror 20 back to the reflector 11 does not coincide with the ray as first reflected by the reflector 11 into said mirror 20 but slightly to one side and thence downward.

It is also apparent that the mirror coating might be placed on the outer side of the upper portion of glass cover 17 but this would require a metallic protector outside of said lass for said coating or otherwise it would be scratched or marred Within a com? paratively short time. By placin the mirror 20 in a, holder which is inscrtible within the lam) said mirror is entirelyprotected and whi o it may be constructed at low cost it is thoroughly adaptable for substantially all forms of reflector lamps.

I claim as ne'w:-

1.. In combination with a parabolic reflector, having a grooved rim with openings extending into the groove, packing in the groove, a metal plate engaged with the packin; and having pairs of spaced slits extending through its periphery, the metal between the slits ot' the pairs being bent inwardl y and foru'iing lugs extending through the openings, a mirror secured to the rear face of the plate, a glass cover engaged with the front face of the plate, and means to secure the glass cover against the plate to thereby hold the lugs of the plate in said openings of the rim.

2. In combination with a parabolic refiector and a glass cover therefor, a. metal plate of substantially semi-circular form. a glass mirror of substantial {semi-circular form superimposed upon the rear face of said metal plate, the curved peripheral portion of the metal plate projecting outwardly of the curved peripheral portion of the glass mirror and being engaged with the reflcctor, fastening devices between the said projecting portion of the metal plate and reflector to support the latter and fastening devices on the'nictal plate to support. the

glass mirror from the plate.

3. in combination with a parabolic reflector, having opeumgs, a metal plate covering the upper halt ot the reflector and having lugs extending through the openings, 13(

a mirror to the rear of the plate, ask/wing.

devices for the mirror cmried by the plate, packing engaged with the Bar 01? sand 11m,

against the packing and having its lower 11 11H (In-( ily engugmg the packing.

In testimsny whereof I have affixed my slgnafc-uz'e 1n the presence of two wltnesses,

GEGRG'E L. HOLLENBECK Wilfnessas:

H, A. SAHDBERG, BESSIE L. COWLEN. 

